linux-kernel - Re: [PATCH v3 1/3] KEYS: Don't write out to userspace while holding key semaphore

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Message-ID: <bfc84e1c-1a40-618a-fd7e-833c5a20063c@redhat.com>
Date:   Tue, 17 Mar 2020 14:09:53 -0400
From:   Waiman Long <longman@...hat.com>
To:     David Howells <dhowells@...hat.com>
Cc:     Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>,
        James Morris <jmorris@...ei.org>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        Mimi Zohar <zohar@...ux.ibm.com>, keyrings@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        linux-security-module@...r.kernel.org,
        linux-integrity@...r.kernel.org,
        Sumit Garg <sumit.garg@...aro.org>,
        Jerry Snitselaar <jsnitsel@...hat.com>,
        Roberto Sassu <roberto.sassu@...wei.com>,
        Eric Biggers <ebiggers@...gle.com>,
        Chris von Recklinghausen <crecklin@...hat.com>
Subject: Re: [PATCH v3 1/3] KEYS: Don't write out to userspace while holding
 key semaphore

On 3/16/20 7:50 AM, David Howells wrote:
> Waiman Long <longman@...hat.com> wrote:
>
>>  include/linux/key-type.h                  |  2 +-
>>  security/keys/big_key.c                   | 11 ++---
>>  security/keys/encrypted-keys/encrypted.c  |  7 ++-
>>  security/keys/keyctl.c                    | 57 +++++++++++++++++++----
>>  security/keys/keyring.c                   |  6 +--
>>  security/keys/request_key_auth.c          |  7 ++-
>>  security/keys/trusted-keys/trusted_tpm1.c | 14 +-----
>>  security/keys/user_defined.c              |  5 +-
>> ...
>> -	long (*read)(const struct key *key, char __user *buffer, size_t buflen);
>> +	long (*read)(const struct key *key, char *buffer, size_t buflen);
> Note that there are read functions outside of security/keys/ that also need
> fixing - dns_resolver_read() and rxrpc_read().
>
> David

Yes, I am going to fix that. Sorry for the delay as I am juggling a few
different tasks.

Cheers,
Longman